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Performance Analysis of Spatially Correlated Massive MIMO with Hardware impairments

Performance Analysis of Spatially Correlated Massive MIMO wi...

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作者： Zeeshan Samad 上海交通大学

学位级别：硕士

Multiple-input multiple-output(MIMO) system with very large number of base station(BS)antennas has attained a lot of attention in recent years. Since, it improves the overall system capacity as well as Bit Error Rate(BER) by exploiting the advantages of high degrees of freedom and better spatial multiplexing. Performance analysis described in this thesis mainly concern with two serious *** impairments: Implementation of large number of antennas on a BS expected to have low power consumption and low-budget radio frequency(rf) components which are prone to hardware impairments. Phase noise(PN), high power amplifier(HPA) nonlinearities, or in phase/quadrature-phase(I/Q) imbalance) are some reasons of introduction such impairments that can drastically effect the performance of large scale MIMO *** mitigation schemes are used to overcome the impact of hardware impairments but unfortunately, these schemes are not perfect enough such that a certain amount of residual rf hardware impairment always *** Correlations: Deployment of large number of antennas on both the transmit and the receive side introduces cross correlations between multiple transmission *** reason of such correlations is the narrow space between adjacent antenna elements. It is essential to consider such correlations during analyzing the system *** the design of practical cellular systems, the actual benefit of multi-antenna transmission is limited by a variety of factors such as hardware impairments and the correlation between multiple transmission channels. In this thesis, we design a new system model for MIMO system by taking transmit rf impairments into account and consider it as an additional distortion during transmission. We further define a spatially correlated channel model to investigate the impact of channel correlations on system capacity. Next a general capacity expression is derived to analyze the performance of massive MIMO in various

关键词： s-MIMO correlated channels channel capacity transmit-rf impairment

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